Semen is produced and originates from the seminal vesicle, which is located in the pelvis. It is secreted by the gonads (sexual glands) and other sexual organs of male or hermaphroditic animals and can fertilize the female ovum.

Semen, also known as seminal fluid, is an organic bodily fluid created to contain spermatozoa. Spermatozoa, in this case human, are a primary component in normal semen, and the agents of fertilization of female ova.